Jenny McCarthy is convinced has one very, very powerful enemy: Oprah Winfrey. Chatting with Andy Cohen on Watch What Happens Live on Tuesday, Oct. 29 (with very attentive and affectionate boyfriend Donnie Wahlberg at her side), the View cohost, 40, admitted that she's "scared of Oprah."

The sardonic blonde explained that she had a falling out with the mega-mogul, 59, after a tentative deal -- McCarthy was to have a talk show on Winfrey's OWN network -- apparently fell through. "I did a deal with her for five years, but we, we kinda shook hands. I would be scared she would beat me up," McCarthy revealed.

When Bravo's Cohen asked McCarthy to clarify what happened with the the deal, she confirmed that "It didn't [work out]," suggesting that she walked away to pursue other interests. "I left. I am terrified . . . I would be like OH NO [if we ran into each other]."

Also on hand for Tuesday's WWHL? Us Weekly's handsome online designer Ryan Casey -- bartender for the night's proceedings! Ryan, the man behind the award-winning blog But You're Like Really Pretty, served up cocktails, gave his best "Ugly Crying Face" and much more Tuesday's episode. Check out his hilarious illustrated book But You Like Really Dated -- available now at Amazon.com!